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(No Model.) 2 Sheets-Sheet 1. P. WUEST, Jr. ELECTRIC MOTOR No. 516,784..Patented Mar. 20, 1894.

2 Sheets-Sheet 2. ST, Jr.

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Patented Mar. 20, 1894.

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UNITED STATES PATENT OFFIC PHILIP WUEST, JR, OF PHILADELPHIA,PENNSYLVANIA, ASSIGNOR TO CHRISTOPHER J. HEPPE AND FLORENCE J. IIEPPE,OF SAME PLACE.

ELECTRIC MOTOR.

SPECIFICATION forming part of Letters Patent No. 516,784, dated March20, 1894.

Application fil May 16, 1892. Serial No. 433,148. (No model.)

To whom it may concern:

Be it known that I, PHILIP lVUEsT, J11, a citizen of theUnited States,and a resident of Philadelphia, Pennsylvania, have invented certainImprovements in Electric Motors, of which the following is aspecification.

The object of my invention is to cheaply construct an electric motor,which will be compact and at the same time eitective, my invention beingespecially designed for small motors, for running light machinery, fans,&c., but the motor may be made in different sizes without departing frommy invention.

In the accompanying drawings: Figure 1 is a perspective view of myimproved motor. Fig. 2 is an end view. Fig. 3 is a sectional plan Viewon the line 12, Fig. 2. Fig. 4 is a transverse sectional view on theline 3-4., Fig. 3. Fig. 5 is a perspective view of the frame; and G is asectional view of adetail of my invention.

A is the frame of the motor, and this frame consists of the electromagnet, A, and pole pieces A which project from the heads 0. the core aand pole pieces being cast in a single piece, as shown in Fig. 5. Thebobbin can be wound by simply placing it in a lathe and winding the wireit upon the core a, for since the pole pieces A are not connected at thetop, they allow the wire to be readily wrapped upon the spool. I prefer,however, when the motor is finally constructed to mount a plate 0. ofbrass or other suitable material, to brace the pole pieces. On one sideof the frame is a bracket A which is either slotted or provided withholes, and by which the motor may be secured to a shelf or any permanentprojecting portion.

B is the armature, having a core Z), on which is a series of projectionsor cogs, and between the projections the armature wires are wrapped, asclearly shown in Figs. 8 and t. On the armature shaft is the commutatorB the segments of which have lugs Z), to which the wires of the armatureare secured. The wires are brazed in the present instance to the lugs,but may be secured thereto in any of the ordinary ways.

Passing through an opening in each pole piece A is a stud d, these studsbeing secured in the pole pieces by set screws (2. The studs are screwthreaded at both ends and adapted to these screw threaded portions arenuts (1 which confine the bearings D D to the studs. On each stud aresleeves (Z (Z which prevent the studs moving longitudinally, so that thebearings are locked in the proper position in relation to the polepieces, but this portion of the device is so arranged that by simplyunscrewing the nuts at one side of the frame and removing one bearingthe armature can be readily removed for repair and placed again inposition without altering the relations of the several parts, and bothbearings can be readily removed, when necessary, the set screws dlocking the studs to the frame. Projecting from one side of each polepiece is a stud F which carries the commutator brush fFigs. 2 and 6. Onthe stud F is a sleeve f of non conducting material which passes throughthe brush holder F, upon which is mounted the brush f. Between thisbrush holder f" and the pole piece A is a second sleeve ofnon-conducting material f and between the nut f and the brush holder isa washer f of non-conducting material, so that the brush holder isinsulated entirely from the pole pieces, and the parts are soconstructed that sufficient friction can be applied to the nut f thatwhile the brush holder can be turned upon the stud, it will, however,remain where put, and the wear can be readily taken up by tightening thenut.

The brush is secured to the holder in the present instance by a setscrew, but other means of fastening may be used it found necessary. Byhaving one brush holder-supporting stud above the central line, and onebelow the central line, as shown in Fig. 2, the brushes can be arrangedone on one side of the commutator and the otheron the opposite side ofthe same, and these brushes can be thrown out of engagement with thecommutator by simply turning their holders, as described above. Anotherfeature is that when these brushes are turned away from the commutator,the commutator, when one bearing is removed, can be readily withdrawnfrom the machine.

On one side of the frame is a plate M of nonconducting material uponwhich are mounted the two plates m 911 each provided with binding posts11 n to which the line wires are secured. The plate m is connected tothe bobbin wire a, while the plate m is connected to a wire 11 attachedto vone of the brush hold ers, the other brush holder being connected tothe opposite end of the wire a as clearly shown in Fig. 1, thuscompleting the circuit.

Byconstructing the motor as above described I not only obtain excellentresults as regard running and power, but the arrangement enables me tocheaply manufacture the motor and so arrange the parts that they can bereadily put together, and the parts can be detached when repairs arenecessary.

By making the core heads and pole pieces in a single casting Idispensewith the necessity of truing up the faces so as to obtain perfect unionand the parts cannot possibly get out of line, and this constructionaffords an excellent framework upon which the, several parts of themotor are supported.

I claim, as my invention- 1 In an electric. motor, the combination ofthe pole pieces, the armature, studs, projectingfrom each side ofthepole pieces carrying removable bearings for the armature shaft, andstuds projecting from said pole pieces,

diagonally above and below the axis of the armature shaft, with brushespivotally mounted upon said latter studs, whereby the armature may bequickly removed or replaced from either side of the motor, substantiallyas described.

2. The combination of the pole pieces, the armature, its shaft, bearingfor said shaft, the commutator, the brushes, studs passing through thepoles and secured therein by set I the field magnets, substantially as,set. forth,

In testimony whereof I have signed my name to this specification in the.presence. of

: two subscribing witnesses.

PHILIP VVUEST', JR.

Witnesses:

WILLIAM D. CONNER, HENRY HoWsoN,

